[Potlatch-dev] [OpenStreetMap] #4902: Warnings for deleting/merging relation members

[OpenStreetMap]

#4902: Warnings for deleting/merging relation members
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 Reporter:  fernando.trebien@…  |      Owner:  potlatch-dev@…
     Type:  enhancement         |     Status:  new
 Priority:  minor               |  Milestone:
Component:  potlatch2           |    Version:
 Keywords:                      |
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 Hello,

 I know this can be considered a duplicate of tickets #3777 and #4879, but
 I'd like to elaborate on this issue.

 Despite members of relations now being rendered a little differently, I
 still see some novice users breaking relations from time to time without
 noticing it. They use Potlatch because it is easy and because they feel
 they can skip a lot of technical reading. The visual language is a very
 nice feature when understood but it is evidently not that obvious to some
 users. A visual clue may indicate that something is different but it does
 not indicate what the difference is.

 I suggest a warning that the user may disable through a check box (and re-
 enable in the Options dialog). The warning can briefly explain the
 possible consequences of operating on relation members and provide a link
 for further reading.

 An example dialog for deleting nodes or ways:

 >If you delete this element, one or more relations may become broken.
 Relation membership can be managed in the Advanced tab. To learn more
 about relations, see: http://wiki.openstreetmap.org/wiki/Relation
 >
 >Proceed?
 >
 >[ ] Don't show this again      [Yes] [No]

 And one for merging ways, shown only if necessary (not shown if all ways
 are already members of the same relations, except relations with
 type=restriction):

 >If you merge these ways, one or more relations may become inconsistent.
 Relation membership can be managed in the Advanced tab. To learn more
 about relations, see: http://wiki.openstreetmap.org/wiki/Relation
 >
 >Proceed?
 >
 >[ ] Don't show this again      [Yes] [No]||

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Ticket URL: <https://trac.openstreetmap.org/ticket/4902>
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